Fertilizer Technology MCQs

186 MCQs — Chemical Engineering MCQs (Page 7 of 19)

Attempt Fertilizer Technology Quiz

Potassic fertilisers__________________?

A. Are useful during early stage of the plant growth
B. Stimulate early growth and accelerate seeding
C. Help in development of starches of potatoes and grain
D. None of these

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Maximum stability of white phosphorous is at__________________?

A. Very high pressure
B. Atmospheric pressure
C. Room temperature
D. > 600°c

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Promoter used in NH3 synthesis catalyst is__________________?

A. K2o
B. Sio3
C. V2o5
D. U2o3

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P2O5 content in superphosphate is about _____________ percent?

A. 30-35
B. 15-20
C. 65-70
D. 85-90

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Dehydration of ammonium carbamate produces__________________?

A. Urea
B. Biuret
C. Ammonia water
D. None of these

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Calcium ammonium nitrate (CAN) is__________________?

A. A mixed fertiliser
B. A straight fertiliser
C. A complex fertiliser
D. Not a fertiliser; it is an explosive

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NPK means a ______________ fertiliser?

A. Mixed
B. Potassic
C. Liquid
D. Solid

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Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because______________________?

A. It is hygroscopic and explosive in nature
B. It is highly acidic in nature
C. It is a liquid at room temperature
D. Its nitrogen content is very less

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Ammonium sulphate can be produced by reacting gypsum with____________________?

A. Ammonia
B. Ammonium carbonate
C. Nitric acid
D. None of these

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Out of the following, N2 content is minimum in_____________________?

A. Urea
B. Ammonium nitrate
C. Ammonium sulphate
D. Ammonium chloride

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